Gas burner

ABSTRACT

An improved gas burner is provided comprising a hollow tubular base member having an elongated cutout therein. An insert fits into the cutout and is provided with a series of spaced, outwardly extending grooves which sealingly engage the surfaces of the cutout. The portions of the insert between adjacent grooves cooperate with the surfaces defining the cutout in forming porting for the burner at which combustion occurs. Portions of the sides of the insert are angularly disposed so as to direct the combustion reaction products outwardly toward the walls of an associated heat exchanger.

United States Patent 51 Apr. 25, 1972 Hartzell [5 1 GAS BURNER [72] Inventor: Donald W. l-lartzell, Somerville, NJ.

[73] Assignee: Fedders Corporation, Edison, NJ.

[22] Filed: July 20, 1970 [21] Appl. No.: 56,624

[52] US. Cl ..239/552, 239/568 [51] Int. Cl. ..B05b 1/14 [58] Field ofSearch ..239/552;43l/354 [56] References Cited UNITED STATES PATENTS 2,541,428 2/1951 Leo et a1 ..239/552 2,348,011 5/1944 Koppel ..239/552 Primary Examiner-Carroll B. Dority, Jr. Attorney-Kane, Dalsimer, Kane, Sullivan and Kurucz [5 7] ABSTRACT An improved gas burner is provided comprising a hollow tubular base member having an elongated cutout therein. An insert fits into the cutout and is provided with a series of spaced, outwardly extending grooves which sealingly engage the surfaces of the cutout. The portions of the insert between adjacent grooves cooperate with the surfaces defining the cutout in forming porting for the burner at which combustion occurs. Portions of the sides of the insert are angularly disposed so as to direct the combustion reaction products outwardly toward the walls of an associated heat exchanger.

4 Claims, 4 Drawing Figures PATENTEDAPR 2 5 I922 INVENTOR flan/44.0 W. #4272544 ATTORNEYS GAS BURNER BACKGROUND OF THE INVENTION The present invention relates to an improvement in burners for gas-fed heat exchangers. Heretofore, such burners were generally formed by drilling or otherwise forming a plurality of ports in a unitary, elongated, hollow burner member. In such burners, gas and air are introduced and mixed within the burner and combustion occurs at the ports. Bafiles and the like may be incorporated in the associated heat exchanger to direct the products of combustion to the heat exchanger walls for efficient heat transfer.

The principal object of the present invention is to provide an improved and simplified gas burner construction. A further object is to provide such a burner with means for directing the flame and combustion products as required for most efficient heat transfer.

SUMMARY OF THE INVENTION The above and other beneficial objects and advantages are attained in accordance with the present invention by providing an improved gas burner comprising an elongated, hollow, generally tubular base member. An elongated opening extends into the interior of the base member. An insert generally coextensive with the opening is disposed within the opening forming a closure for the major portion thereof. The insert comprises a trough-shaped member having a base plate with opposed interconnected side walls and end walls extending upwardly from the periphery of the plate. The side walls include a plurality of spaced grooves extending outwardly transverse to the longitudinal axis and perpendicular to the plane of the plate. When the burner is assembled, the grooves are adapted to abut against the surfaces of the base member defining the opening whereby those portions of the side walls between adjacent grooves cooperate with the base member surfaces in defining the burner porting. The insert side walls include a lower portion extending from the plate generally perpendicular to the plane of the plate and an upper portion which is disposed at an angle of between 15 and 50 with respect to the plane of the plate. The upper portion serves to direct the burner flame outwardly, away from the burner.

BRIEF DESCRIPTION OF THE DRAWINGS In the accompanying drawing:

FIG. 1 is a fragmentary side elevational view partly in section of a heat exchanger utilizing the gas burner of the present invention;

FIG. 2 is a plan view of the burner of the present invention taken along reference lines 2--2 of FIG. 1 in the direction indicated by the arrows;

FIG. 3 is an enlarged sectional view taken along reference lines 33 of FIG. 2 in the direction indicated by the arrows;

' and,

FIG. 4 is an enlarged sectional view taken along reference lines 4--4 of FIG. 3 in the direction indicated by the arrows.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Reference is now made to the drawings and to FIG.'1 in particular wherein a portion of a vertical gas furnace is illustrated. The furnace 10 includes a plurality of heat exchanger assemblies 12, each of which is provided with a horizontally disposed gas burner 14. A suitable flue bafile 16 is provided at the top of the heat exchanger.

In use, combustion takes place on the top surface of burner 14 and, if required, the flame and combustion products 18 may be directed outwardly towards the walls of the heat exchanger in part by the construction of the burner as will be described forthwith.

Referring now to FIG. 2, it may be noted that burnerl4 comprises an elongated, generally tubular, horn-shaped base member 20, the diameter of which varies over its length. Support brackets 22 and 24 are provided along the base member to facilitate the mounting of the burner within heat exchanger 12. One end 26 of base member 20 is sealed. The opposite end 28 is provided with an end plate 30 which in turn contains two vent holes 32 and 34. A closure plate 36 provided with holes corresponding to vent holes 32 and 34 is rotatably mounted with respect to end plate 30 so that by proper rotation of closure 36 the degree of opening of vent holes 32 and 34 may be varied. Referring now to FIG. 3, it may be noted that base member 20 is formed of two sections 38 and 40 welded together along bottom flanges 42 and 44 respectively.

As shown in FIG. 3, the top of the base member 20 is provided with a cutout generally designated by numeral 46 defined by spaced apart walls 48 and 50, both of which are perpendicular to a common diameter. As may be seen in FIG. 2, cutout 46 extends along the major portion of the length of burner 14.

An insert 52 generally coextensive with cutout 46 is disposed within the cutout and provides a closure for the major portion of the cutout. As noted from FIG. 3, the insert 52 in cross-section resembles a trough-shaped member formed of bottom plate 54, and continuous integral side walls 56 and 58 and end walls 60 and 62 extending upwardly from the plate. Each of the side walls 56 and 58, includes a lower portion which extends from plate 54 substantially perpendicular to the plane of the plate and an upper portion 60 (and 62) which is disposed at an angle with respect to the plane of plate 54. For reasons to be explained forthwith, in this preferred embodiment the upper portions 60 and 62 are disposed at an angle of between 15 and 50 with respect to the plane of the plate and preferably at an angle of substantially 30 with respect to the plane of the plate. The lower portions of side walls 56 and 58 are substantially coextensive with walls 48 and 50 of the base member.

Referring now to FIG. 4, it may be noted that the peripheral configuration of insert 52 is such that the insert cooperates with the walls 48 and S0 of the base member in defining a plu rality of passageways 64 extending into the interior of the base member. To this end, the width between the lower portions of sidewalls 56 and 58 is somewhat less than the difference between walls 48 and 50 of the base. A plurality of spaced grooves 64 extend outwardly transverse to the longitudinal axis of insert 52. The grooves are adapted to abut the base member wall surfaces while a spacing exists between the insert and the base member wall between adjacent grooves. The spacings, or passageways 64, serve as ports for the air-gas mixture within the burner so as to enable combustion to occur on the surface of the burner. In this regard, a suitable inlet 68 is provided to introduce gas into the burner for eventual combustion at the ports 64.

The upper portions 60 and 62 of the insert walls extend over the ports and since they are angularly disposed, they tend to direct the combustion products and flames outwardly toward the walls of the associated heat exchanger. Optimum results were observed to occur when the angle of the upper wall portion was approximately 30. If this angle was reduced below 15, the flame was over-obstructed by the wall portion. If the angle exceeded 60, little or no flame direction was observed. It should be apparent that in many instances flame direction is not required in which case the upper portions of the sidewalls need not be flared and may merely form an extension of the lower portions.

Thus, in accordance with the above, an improved gas burner is provided. It should be understood that modifications may be made in the illustrated and described embodiment of the present invention without departing from the invention as set forth in the accompanying claims.

Having thus described the invention, what is claimed is:

1. An improved gas burner comprising an elongated hollow generally tubular base member; inlet means communicating with the interior of said base member for coupling said burner to a gas source; surfaces on the exterior of said base member defining an elongated cutout forming an opening into the interior of said base member; an insert generally coextensive with said opening disposed therein and comprising a closure for the major portion of said opening, said insert including an elongated, generally rectangular plate having opposed side walls and end walls extending upwardly from the periphery of said plate, said side walls including a plurality of spaced grooves extending outwardly transverse to the longitudinal axis of said insert, said grooves being adapted to abut against said base member surfaces whereby each of those portions of the side walls between adjacent grooves cooperates with said base member surfaces in defining a passageway into the interior of said base member and each of said insert side walls includes a lower portion extending from the plate generally perpendicular to the plane of said plate and an upper portion disposed at an angle of between 15 and 50 with respect to the plane of said plate.

2. The invention in accordance with claim 1 wherein said side wall upper portion is disposed at an angle of substantially 30 with respect to the plane of said plate.

3. The invention in accordance with claim 2 wherein said base member is generally cylindrical, said base member surfaces include a pair of longitudinally extending, spaced apart walls extending perpendicular to a common diameter for a distance substantially equal to the lower portion of said insert side walls whereby said insert side wall grooves and said base member walls maintain an abutting gas impervious relationship and said insert upper portion extends over the top of said base member walls and is spaced outwardly therefrom.

4. The invention in accordance with claim 1 wherein said base member includes a first end, a cover plate for said first end, at least one vent hole disposed within said cover plate, and a shiftable closure means for said vent hole whereby the extend of the opening of said vent hole may be controlled. 

1. An improved gas burner comprising an elongated hollow generally tubular base member; inlet means communicating with the interior of said base member for coupling said burner to a gas source; surfaces on the exterior of said base member defining an elongated cutout forming an opening into the interior of said base member; an insert generally coextensive with said opening disposed therein and comprising a closure for the major portion of said opening, said insert including an elongated, generally rectangular plate having opposed side walls and end walls extending upwardly from the periphery of said plate, said side walls including a plurality of spaced grooves extending outwardly transverse to the longitudinal axis of said insert, said grooves being adapted to abut against said base member surfaces whereby each of those portions of the side walls between adjacent grooves cooperates with said base member surfaces in defining a passageway into the interior of said base member and each of said insert side walls includes a lower portion extending from the plate generally perpendicular to the plane of said plate and an upper portion disposed at an angle of between 15* and 50* with respect to the plane of said plate.
 2. The invention in accordance with claim 1 wherein said side wall upper portion is disposed at an angle of substantially 30* with respect to the plane of said plate.
 3. The invention in accordance with claim 2 wherein said base member is generally cylindrical, said base member surfaces include a pair of longitudinally extending, spaced apart walls extending perpendicular to a common diameter for a distance substantially equal to the lower portion of said insert side walls whereby said insert side wall grooves and said base member walls maintain an abutting gas impervious relationship and said insert upper portion extends over the top of said base member walls and is spaced outwardly therefrom.
 4. The invention in accordance with claim 1 wherein said base member includes a first end, a cover plate for said first end, at least one vent hole disposed within said cover plate, and a shiftable closure means for said vent hole whereby the extend of the opening of said vent hole may be controlled. 